/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package dal;

import entity.Book;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author EKT
 */
public class Manager extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        int idBook = Integer.parseInt(request.getParameter("id"));
        System.out.println("This id: " + idBook);

        showBook(request);
        request.getRequestDispatcher("/DatHang.jsp").forward(request, response);
        //response.sendRedirect("DatHang.jsp");
    }

    public void showBook(HttpServletRequest request){
        try {
//            int idBook = Integer.parseInt(request.getParameter("id"));
            String idBook = request.getParameter("id");
            System.out.println("This id : " + idBook);

            Connection con = null;
            DBConnection connect = new DBConnection();
            con = connect.getConnection();
            PreparedStatement smt = null;
            ResultSet rs = null;

            smt = con.prepareStatement("Select * from Book where Id =?");
            smt.setString(1, idBook);
            rs = smt.executeQuery();

            List<Book> list = new ArrayList<Book>();
            while(rs.next()){
                Book books = new Book();
                books.setId(rs.getInt("Id"));
                books.setName(rs.getString("Name"));
                books.setAuthor(rs.getString("Author"));
                books.setPublisher(rs.getString("Publisher"));
                books.setYear(rs.getInt("Years"));
                books.setDescription(rs.getString("Descriptions"));
                list.add(books);
            }
            request.setAttribute("list", list);

        } catch (Exception ex) {
//            Logger.getLogger(Manager.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
